Because you are limited to 32-bit VST 2.0 plugins, your options are restricted to "Legacy" software. Here are the best options that historically worked flawlessly with Audition 1.5.
Before diving into VSTs, it is important to understand why anyone still uses Audition 1.5 in an era of cloud-based subscriptions. The reasons are threefold: Autotune Vst For Adobe Audition 1.5
Set Autotune 5 to and Humanize: 0 . Sing a rap line. The dramatic, stair-stepped pitch jumps become a rhythmic effect. This is the original "Cher Believe" effect, and Audition 1.5’s pristine summing bus makes it sound massive. Because you are limited to 32-bit VST 2
For $0 (using GSnap) to $50 (a used license of Auto-Tune 5), you can transform this vintage audio editor into a pitch-perfect vocal production powerhouse. The key is respecting the 32-bit limitation and embracing the lo-fi, direct workflow. The reasons are threefold: Set Autotune 5 to
This is the most common stumbling block for users attempting to install plugins on Audition 1.5.
Go to the Effects menu > Time and Pitch > Automatic Pitch Correction .